Spelling variations of this family name include: McNemanin, McManamon, McMenamy, McManaway, McManamin, McManamy, McMenamen, McMenemen, McMenimin and many more.

First found in Tirconnell (Irish: Tír Chonaill) present day Donegal, located in Northwestn Ireland in the province of Ulster, where they held a family seat as Chiefs in that territory. Irish history, after the Norman Conquest of England, was strongly influenced by the invasion of Strongbow in 1172. Many Irish clanns, sept names were intermixed and family groupings became almost indistinguishable. This family name was found later in Mayo and in Donegal at Letterkenny and Ballybofey. Still later they branched to Tyrone at Omagh Union.

McDonnell, Frances. Emigrants from Ireland to America 1735-1743 A Transcription of the report of the Irish House of Commons into Enforced emigration to America. Baltimore: Genealogical Publishing, 1992. Print. (ISBN 0-8063-1331-5).

Skordas, Guest. Ed. The Early Settlers of Maryland an Index to Names or Immigrants Complied from Records of Land Patents 1633-1680 in the Hall of Records Annapolis, Maryland. Baltimore: Genealogical Publishing Co., 1992. Print.